Overhead trolley.



A. P. LORD, C. A. LINDBERG & J. V. FLANIGAN. OVERHEAD TROLLEY.

APPLICATION FILED MAR. 21, 1911.

Patented May 21, 1912.

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UNITE STATES PATENT OFFICE.

ALLEN I. LORD, CHARLES A. LINDBERG, AND JOHN V. FLANIGAN, OF BRADFORD,PENNSYLVANIA; SAID LORD AND LINDBERG ASSIGNORS TO SAID FLANIGAN.

OVERHEAD TROLLEY.

' To all whom it may concern:

Be it known that we, ALLEN P. LORD, CHARLES A. LINDBERG, and JOHN V.FLANI- GAN, citizensof the United States, residing at Bradford,Pennsylvania, have invented certain new and useful Improvements inOverhead Trolleys, of which the following is a specification.

Our present invention relates to improvements in overhead trolleys forelectric railways, and has among others for its object the following:first, to provide a construction which shall be extremely simple andeconomical of construction, and of extreme durability and efiiciency inservice; second, to provide means by which the wheel may be easily andquickly removed when worn and replaced,whereby such change can bereadily made by the motorman in cold weather; third, to provide aself-lubricating construction in which a proper supply of lubricant willalways be maintained for the moving or bearing parts, and, fourth, toprovide a construction which willbe free from any liability of catchingon or injuring the trolley wire in case of the Wheel jumping thetrolley.

With these and possibly other objects in view the invention includes thenovel features of construction and combination and arrangement of partshereinafter described and particularly set forth in the appended claims.

We have illustrated our invention by the aid of the accompanyingdrawings, in which Figure 1 is a side elevation partly in section; andFig. 2 is a section on line 2--2 of Fig. 1.

Referring by reference characters to these drawings, the numeral 4designates the shank or socket of the harp, which socket is designed tobe secured in a suitable manner upon the end of the pole, a convenientway of forming these being to cast the parts one into the other and tomake the joint the more effective one of them may be provided with aroughened or serrated surface, as indicated at 4, so that the parts arethe more thoroughly interlocked or engaged when cast together. The arms5 of the socket which are substantially parallel with each other arehollow, as also is the body of the socket, the hollow portion 4* of thesocket forming an oil chamber from which lead the pas- Specification ofLetters Eatent.

Application filed March 27, 1911.

Patented May 21, 1912.

Serial No. 617,120.

sa es 5 11 ward in the hollow arms throu h b 7 b which the lubricant isconveyed to the bearings of the trolley wheel in the manner hereinafterdescribed. The trolley wheel is indicated at G, and may be of theordinary or any desired construction and material, and is preferablycast solidly upon a steel shaft 7, and in casting it upon the shaft oneof the parts may likewise be corrugated, as indicated at 6, so as toinsure the more rigid connection between the two. The shaft 7 isjournaled in bearings 8, preferably of brass, which are seated intapered'recesses in the forks and have depending wings or flanges 8which engageopposite sides of the arms of the fork, and are held inplace by cotter pins 9. The tapered fit of the bearings, coupled withthe overlapping flanges, holds these rigidly in position, so that theonly work which the cotter pins have to do is to prevent upwardmovement, while at the same time if, by reason of wear of the Wheel orfor any other purpose, it is desirable to remove the wheel, this iseasily accomplished by the motorman even in cold weather and withoutremoving his gloves by simply withdrawing the cotter pins and liftingout the bearings with the wheel, whereupon the wheel and its shaft maybe removed from the bearings and a new wheel substituted or newbearings, as may be found desirable. In order to reduce, as far aspossible, any resistance to the flow of electricity through thebearings, we provide metallic conductor springs 10 which are riveted tothe forks, as indicated at 11, and have their upper portions bearingagainst the opposite ends of the shaft, as indicated at 10. In order toprovide for eflicient lubrication, we insert in each arm a conductingwick or capillary medium, as indicated at 12, which, when in position,occupies an inverted U-shape, the two ends depending into the oilchamber and the intermediate portion extending across and into contactwith the under side of the steel shaft, and being retained from beingjarred out of contact therewith by the cotter pm 9.

It will be noticed that the upper faces of the bearing blocks areinclined outwardly and downwardly so that in case of a trolley wheeljumping the wire, the latter slides quickly and freely from off thisinclined surface without injury. The ordinary rope ring is shown at 13,and may be connected by a bolt 14 passing through the socket and pole.

Having thus described our lnventlon What We claim is:

1. In combination a harp having recesses in the upper ends of the armsthereof bearing blocks seated insaid recesses and having.-

depending flanges embracing opposite sides of the respective arms,cotter pins connecting said depending flanges With said arms, and atrolley Wheel having its shaft journaled in said bearing blocks.

2. In combination a harp having bearing blocks removably carried by thearms thereof, and a trolley Wheel having its shaft journaled in saidblocks, said harp having an oil containing chamber and communicatingpassages extending up through said arms and communicating withcorresponding ports or passages through the bearing blocks, and invertedU-shaped Wicks having their loWer ends resting in the oil chamber andmeans for holding their intermediate portions in contact with the underside of the trolley Wheel shaft.

In testimony whereof, We aflix our signatures in presence of twoWitnesses.

ALLEN P. LORD. s CHARLES A. LINDBERG. JOHN V. FLANIGAN.

Witnesses:

KATHARINE BURKE, EDWIN E. TAIT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

